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openai/o4-mini
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o4 Mini

OpenAI o4-mini is a compact reasoning model in the o-series, optimized for fast, cost-efficient performance while retaining strong multimodal and agentic capabilities. It supports tool use and demonstrates competitive reasoning and coding performance across benchmarks like AIME (99.5% with Python) and SWE-bench, outperforming its predecessor o3-mini and even approaching o3 in some domains. Despite its smaller size, o4-mini exhibits high accuracy in STEM tasks, visual problem solving (e.g., MathVista, MMMU), and code editing. It is especially well-suited for high-throughput scenarios where latency or cost is critical. Thanks to its efficient architecture and refined reinforcement learning training, o4-mini can chain tools, generate structured outputs, and solve multi-step tasks with minimal delay—often in under a minute.

4/16/2025
200,000 tokens
#75 Vision (Overall)

Specifications

Modalities

Input
image
text
file
Output
text

Supported Parameters

include_reasoning
max_tokens
reasoning
response_format
seed
structured_outputs
tool_choice
tools

Max Output Tokens

100,000

Frequently asked questions

Is o4 Mini available on FastMetal?
Not at the moment. GPT-5.6 Sol, from the same lab, is available on the FastMetal API today.
What is the context window of o4 Mini?
200,000 tokens, shared between the prompt and the response.
How does o4 Mini rank?
#118 on the public arena's Japanese board (ELO 1,347). Ranks move as the leaderboard is updated.

Leaderboard

Text
OverallELO: 1,391
#158
JapaneseELO: 1,347
#118
ChineseELO: 1,404
#165
KoreanELO: 1,356
#112
EnglishELO: 1,405
#161
frenchELO: 1,412
#138
germanELO: 1,378
#140
spanishELO: 1,385
#146
russianELO: 1,371
#169
MathELO: 1,417
#116
CodingELO: 1,433
#165
Creative WritingELO: 1,337
#179
Instruction FollowingELO: 1,368
#173
Hard PromptsELO: 1,406
#165
Multi-TurnELO: 1,381
#171
Vision
OverallELO: 1,200
#75